Metal Rainwater Outlets - Moy Materials

1 Engineered Drainage SystemsRoof Drainage SystemsHarmer Roof OutletsMetal Rainwater Outlets9 Alumasc Technical Helpline 01744 648400 Metal RainwaterOutletsEngineered Drainage SystemsRoof Drainage SystemsHarmer Roof OutletsMetal Rainwater Outlets10 Alumasc Technical Helpline 01744 648400 Introduction to Anti-Vortex OutletsThe performance of AV outletsaccelerates as the depth of water atthe outlet or rainfall intensityincreases. The unique high flowperformance of Harmer Roof AVoutlets demands that each outlet isconnected to a dedicated or individualrainwater stack. AV Outlets should beused for securing optimumperformance when connected toindividual downpipes, and not as partof a managed Rainwater and WashersStainless steelAV GrateTamper proof, secured toclamping ring by twopocketed stainless steel boltsClamping RingDesigned to secure thewaterproof membrane to theoutlet body, it is fixed to theoutlet body with twostainless steel fixing studsOutlet BodyScrewed, throughflange, tosupportingstructureMain CharacteristicsEnhanced PerformanceHarmer Rainwater Outlets provide,with the Harmer Roof AV range, anti-vortex performance from aneconomic, general purpose range ofoutlets.

2 Harmer Roof AV incorporatesa patented baffle within the grating,to prevent water swirl and airentrapment, enabling the outlet todrain at 90% of its pipe Benefits of the Harmer Roof AV Range: Drains up to 40% more roof area than conventional gravity outlet . AV can be used with any connecting pipework material, and all popular pipework sizes. Easy installation into roofs and gutters using bituminous and single ply waterproofing systems. High flow performance with increasing head of water at the outlet . Ensures 90% efficiency of outlet capacity. Special retro-gulley for flat roof refurbishment is also available. Multi-gulley available for angled Drainage SystemsRoof Drainage SystemsHarmer Roof OutletsMetal Rainwater Outlets11 Alumasc Technical Helpline 01744 648400 Anti-Vortex OutletsVertical Spigot OutletHarmer Roof AV Vertical Spigot rainwateroutlets are designed for use with flatroof structures using either insitu castconcrete, timber and lightweight metaldeck construction.

3 Harmer Roof outletsare ideal for connection to continuouswaterproofing systems using single plymembranes, mastic asphalt or highperformance built up Roof AV Vertical Spigot outletsare available in cast aluminium orgunmetal. Gunmetal Outlets should bespecified for copper or lead-cladroofs,or slate roofs using copper nails. Aluminium Outlets are cast in LM6aluminium silicon alloy to BS 1490: Outlets are the same designas aluminium but are cast in 85/5/5/5leaded gunmetal to BS EN 1982: 1999 insulation is available as anoption for both aluminium andgunmetal vertical spigot to PipeworkVertical Spigot Outlets are suitable fordirect connection to: Cast iron pipework to EN 877 andBS 416: 1973 with appropriatecoupling. HDPE pipework with appropriatecoupling. PVC O-ring socketed pipe to BS 4514: 1983 (300, 400 and 600outlets only).

4 GratesHarmer AV Rainwater Outlets aredesigned to receive either domical orflate grates. Flat grates should be usedif the outlet occurs in an area which issubject to pedestrian traffic. Thesegrates are also designed for use ininverted roof constructions, wherepaving slabs on special Harmer pavingslab supports are used to ballast theinsulation. Rainwater drains betweenthe open joints of the paving to theconcealed Outlets are sized to suit nominaldiameter pipework shown in thetable belowTa b le of DimensionsOutlet ordering code(For flat grate, add /F to code reference)AV200AV300AV400AV600(mm)(mm)(m m)(mm)Pipe dia (nominal) 5075100150a 292292380380b 233233305305c 988812298d 98108122145e 6083110160abecdFlat grate (optional)Domical grateNote.

5 A range of accessories is available for use with special detail pages Drainage SystemsRoof Drainage SystemsHarmer Roof OutletsMetal Rainwater Outlets12 Alumasc Technical Helpline 01744 648400 Anti-Vortex OutletsVertical Screw OutletHarmer Roof AV Vertical Screw rainwateroutlets are designed for use with flatroof structures using either insitu castconcrete, timber and lightweight metaldeck construction. Harmer Roof outletsare ideal for connection to continuouswaterproofing systems using single plymembranes, mastic asphalt or highperformance built up Roof AV Vertical Screw outletsare available in cast aluminium orgunmetal. Gunmetal Outlets should be specified for copper, lead-clad roofsand for connection to copper pipework,or slate roofs using copper Outlets are cast in LM6aluminium silicon alloy to BS 1490: Outlets are the same design asaluminium but are cast in 85/5/5/5 leadedgunmetal to BS EN 1982: 1999 - foamed insulation is availablefor both aluminium and gunmetal to PipeworkVertical Screw Outlets have a femalesocket with parallel thread to BS 21: 1985for direct connection to threaded tubeconforming with BS 1387:1985.

6 This tubeis supplied with BS 21: 1985 taper malethread which ensures a completelywatertight joint when screwed home intothe socket Outlets are particularlyrecommended where a connection to theoutlet occurs within the thickness of aconcrete slab. In such cases, a threadedconnection will create a completely gas-tight seal within the Roof AV screw Outlets can beconnected to socketed and socketless castiron pipework, HDPE pipework and PVCpipework by means of the Harmer Roofscrew threaded adaptor with appropriatecoupling. (See pages 6 and 26).GratesHarmer AV Rainwater Outlets are designedto receive either domical or flate grates should be used if the outletoccurs in an area which is subject topedestrian traffic. These grates are alsodesigned for use in inverted roofconstructions, where paving slabs onspecial Harmer paving slab supports areused to ballast the insulation.

7 Rainwaterdrains between the open joints of thepaving to the concealed Outlets : A range of accessories is available for use with special detail pages to suit nominaldiameter pipe sizes shown in thetable belowabTable of DimensionsOutlet ordering code(For flat grate, add /F to code reference)AV200 TAV300 TAV400 TAV600T(mm)(mm)(mm)(mm)Pipe dia (nominal) 5075100150a 292292380380b 234234305305c 86769576d 35453838cdFlat grate (optional)Domical grateEngineered Drainage SystemsRoof Drainage SystemsHarmer Roof OutletsMetal Rainwater Outlets13 Alumasc Technical Helpline 01744 648400 Retro-Gulley OutletHarmer Roof AV Retro-Gulley outletsare designed to fit within the existingoutlet and pipework of the roof whichis being use of AV increases flowperformance at the outlet locationregardless of pipe diameter downsizingby introduction of the is no need to remove the oldrainwater of minimal disturbance andthe ease with which the Retro-Gulley isfitted, it represents an extremely cost-effective and efficient solution to flatroof outlet body is in diecast LM6aluminium silicon alloy to BS 1490: 1988,and incorporates a welded 300mmaluminium tail pipe.

8 The tail pipe, cut tothe required length, is simply insertedthrough the existing outlet , into existingpipework, and sealed by means of theHarmer Roof AV special multi-fin pipeseal. This seal creates a watertightjunction between existing pipework andthe Retro-Gulley tail outlet body s wide fixing flangeincorporates concentric grooves whichenhance the bond with roofing felts LM6 aluminium silicon clampingring, also has a ridged under-surfacefor improved bond with sealable ports in the outlet body aredesigned for injection of PU foam to fillthe void between old and new to PipeworkThe Retro-Gulley may be used for anytype of warm roof refurbishment andwith any flat roof waterproofingsystem. 75mm and 100mm pipeworkoptions are available, and willaccommodate variations on pipeinternal diameter from PVC through tocast iron pipe AV Retro-Gulley has been designedin conjunction with the Flat RoofingContractors Advisory.

9 A range of accessories is available for use with special detail pages b le of DimensionsOutlet ordering codeRAV75 RAV100(mm)(mm)Pipe dia (nominal) 75100a 456456b 304304c 3434d 4646e Pipe Diameter Ranges Suitable for Connection to AV Retro-Gulley outlet ordering codeExisting pipework internal diameter(mm) Drainage SystemsRoof Drainage SystemsHarmer Roof OutletsMetal Rainwater Outlets14 Alumasc Technical Helpline 01744 648400 Anti-Vortex OutletsMulti-Gulley OutletHarmer Roof AV Multi-Gulley Outlets aredesigned to provide multidirectionaldrainage.

10 Rotated on site, theinterchangeable spigot pipe allows forany angled outflow from vertical tohorizontal. This flexibility also affordseasier alignment of pipe systems. Interchangeable spigots lock onto thesingle size outlet body, yet enableconnections to 75mm or 100mmpipework to be made. The special sumpdesign of the outlet body works inconjunction with the anti-vortex grateto provide optimum rainwatermovement. The Multi-Gulley has beendesigned in close co-operation withthe Flat Roofing ContractorsAdvisory Board. The fixing designextends the use of the Multi-Gulleyto built-up roofing, single ply andmastic asphalt Roof AV Multi-Gulley Outlets areonly available in cast Outlets are cast in LM6aluminium silicon alloy to BS 1490:1988 Connection to pipeworkThe Multi-Gulley Outlets are suitablefor direct connection to: Cast iron pipework to EN 877 andBS 416: 1973 with appropriatecoupling.